How to use the dissolved oxygen saturation calculator
Estimate oxygen saturation of fresh water at a temperature. Enter water temperature in the field above; the saturation concentration is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- T — Water temperature (°C)
Worked example
With water temperature = 20 °C, the calculator gives saturation concentration ≈ 9.021808 mg/L.
Frequently asked questions
What is the formula for the dissolved oxygen saturation calculation?
Saturation concentration (mg/L) = 14.652-0.41022 × T+0.007991 × T × T-0.000077774 × T^3. Here T is water temperature (°C).
What inputs do I need for the dissolved oxygen saturation calculator?
You need water temperature in °C. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.